The last knob to the right on the top row went from jumping values and now doesn't work at all. Tried a reset, because why not? I've heard they come loose and that by just re-soldering them to the board, they will work perfectly. I'm thinking I'll just have to replace it, but Yamaha support seems to be unaware that the product ever existed, much less the part required. Should I wait to see if the parts come up on eBay or just take it to my tech and have him do the re-solder before hitting the bay?